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wxMacMolPlt vs Avogadro: catalog facts
wxMacMolPlt	Avogadro
Free Free and open source under GPLv2.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Graphical molecule builder Generates GAMESS input files	Handles systems of thousands of atoms Force fields quickly clean up sketched structures
Built specifically around GAMESS Releases are infrequent	Assumes some chemistry background Not a full simulation package on its own
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.